What does the word harbinger mean?

A harbinger is something that signals the approach of something else, especially something important or significant.

Think of it as a precursor, herald, or omen.

Here are some examples:

* "The first robin of spring is a harbinger of warmer weather."

* "The dark clouds are a harbinger of an impending storm."

* "The rise in gas prices is a harbinger of economic trouble."

It's important to note that a harbinger doesn't necessarily predict the future, but it does suggest that something significant is on its way.